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INT-2831: Add Jackson 2 support

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Add Jackson 2 support while retaining backward compatibility as much as possible.

Introduce a new abstraction for JSON conversion.

JIRA: https://jira.springsource.org/browse/INT-2831

INT-2831: Polishing

* remove `JsonObjectMapperFactoryBean`
* add @Deprecated constructors to `ObjectToJsonTransformer` and `JsonToObjectTransformer`

Polishing

Docs, compiler warnings.
This commit is contained in:
Artem Bilan
2013-03-23 17:18:31 +02:00
committed by Gary Russell
parent 486e0bee3c
commit a103e43c6a
28 changed files with 1105 additions and 234 deletions
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20
src/reference/docbook/transformer.xml
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@@ -225,17 +225,31 @@ public class Kid {
<programlisting language="xml"><![CDATA[<int:json-to-object-transformer input-channel="objectMapperInput"
type="foo.MyDomainObject" object-mapper="customObjectMapper"/>]]></programlisting>
</para>
<note>
<para>
Beginning with version 3.0, the <code>object-mapper</code> attribute references an instance of a new
strategy interface <interfacename>JsonObjectMapper</interfacename>. This abstraction allows multiple
implementations of json mappers to be used. Implementations that wrap Jackson 1.x and Jackson 2 are
provided, with the version being detected on the classpath. These classes are
<classname>JacksonJsonObjectMapper</classname> and <classname>Jackson2JsonObjectMapper</classname>.
</para>
<para>
For backward compatibility, a simple Jackson 1.x <classname>ObjectMapper</classname> can be provided
instead of a <interfacename>JsonObjectMapper</interfacename>. This will be removed in a future release.
</para>
</note>
<para>
You may wish to consider using a FactoryBean or simple factory method to create the ObjectMapper with
You may wish to consider using a <interfacename>FactoryBean</interfacename> or simple factory
method to create the <classname>JsonObjectMapper</classname> with
the required characteristics.
</para>
<para>
<programlisting language="java"><![CDATA[public class ObjectMapperFactory {
public static ObjectMapper getMapper() {
public static Jackson2JsonObjectMapper getMapper() {
ObjectMapper mapper = new ObjectMapper();
mapper.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
return mapper;
return new Jackson2JsonObjectMapper(mapper);
}
}]]></programlisting>
</para>

9
src/reference/docbook/whats-new.xml
View File

@@ -127,5 +127,14 @@
please see <xref linkend="jdbc-message-store-generic"/>.
</para>
</section>
<section>
<title>Jackson Support (JSON)</title>
<para>
A new abstraction for JSON conversion has been introduced. Implementations for Jackson 1.x
and Jackson 2 are currently provided, with the version being determined by presence on
the classpath. Previously, only Jackson 1.x was supported. For more information,
see 'JSON Transformers' in <xref linkend="transformer"/>.
</para>
</section>
</section>
</chapter>